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Asymmetric volatility spillovers between international economic policy uncertainty and the U.S. stock market

机译:国际经济政策不确定性与美国股市之间的不对称波动溢出

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This paper studies the asymmetric spillover effect of important economic policy uncertainty (EPU) on the S&P500 index. We use monthly EPU indexes from Australia, Canada, China, Japan, the U.K. and the U.S. and the realized volatility of the U.S. stock market to study the asymmetric pairwise directional spillovers on the U.S. stock market from 2000 to 2019. We find that S&P500 index volatility is a net recipient of spillovers from important EPU indexes. Japanese EPU has the strongest spillover effect on the U.S. stock markets, while EPU from the U.K. plays a very limited role. By decomposing the volatility into good and bad volatility, we find that the relationship between bad stock market volatility and EPU is stronger than between good volatility and EPU. Time-varying spillover characteristics show that bad volatility reacts more strongly to shocks in EPU following the debt crisis and trade negotiations. Several robustness checks are provided to verify the novelty of these findings.
机译:本文研究了重要的经济政策不确定性(EPU)对S&P500指数的不对称溢出效应。我们使用来自澳大利亚,加拿大,中国,日本,英国和美国的每月EPU指数以及美国股市实现的波动性,从2000年至2019年研究美国股市上的非对称成对定向溢出率。我们发现标准普尔指数波动性是来自重要的欧盟索引的溢出率的净接受者。日本EPU对美国股市上具有最强的溢出效应,而来自U.K的EPU。作用非常有限。通过将波动性分解成良好和不良波动性,我们发现糟糕的股市波动与欧盟的关系比良好波动性与欧盟之间的关系强。时变溢出特征表明,在债务危机和贸易谈判之后,波动率的不良波动更加强烈。提供了几种稳健性检查以验证这些发现的新颖性。

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